能加工处理的多点触控? [英] Can Processing handle multi-touch?
本文介绍了能加工处理的多点触控?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我是新来处理,我想在Android的模式下运行我的草图。我希望它同时支持多点触摸。
I am new to Processing and I would like to run my sketch in Android mode. I want it to support multiple touches simultaneously.
我在想,如果有人能指导我这个问题:
I was wondering if someone can guide me on this question:
我怎样才能让我的素描支持多点触摸?
推荐答案
下面是一个完整的例子:
Here is a full example:
/*
*
* androidMultiTouch.pde
* Shows the basic use of MultiTouch Events
*
*/
//-----------------------------------------------------------------------------------------
// IMPORTS
import android.view.MotionEvent;
//-----------------------------------------------------------------------------------------
// VARIABLES
int TouchEvents;
float xTouch[];
float yTouch[];
int currentPointerId = 0;
boolean printFPS;
//-----------------------------------------------------------------------------------------
void setup() {
size(displayWidth, displayHeight);
orientation(LANDSCAPE);
background(0, 255, 0);
fill(0, 0, 244);
rect(100, 100, 100, 100);
stroke(255);
// Initialize Multitouch x y arrays
xTouch = new float [10];
yTouch = new float [10]; // Don't use more than ten fingers!
}
//-----------------------------------------------------------------------------------------
void draw() {
background(255, 0, 0);
for (int i = 0; i < xTouch.length; i++) {
ellipse(xTouch[i], yTouch[i], 150, 150);
}
}
//-----------------------------------------------------------------------------------------
public boolean surfaceTouchEvent(MotionEvent event) {
// Number of places on the screen being touched:
TouchEvents = event.getPointerCount();
// If no action is happening, listen for new events else
for (int i = 0; i < TouchEvents; i++) {
int pointerId = event.getPointerId(i);
xTouch[pointerId] = event.getX(i);
yTouch[pointerId] = event.getY(i);
float siz = event.getSize(i);
}
// ACTION_DOWN
if (event.getActionMasked() == 0 ) {
print("Initial action detected. (ACTION_DOWN)");
print("Action index: " +str(event.getActionIndex()));
}
// ACTION_UP
else if (event.getActionMasked() == 1) {
print("ACTION_UP");
print("Action index: " +str(event.getActionIndex()));
}
// ACTION_POINTER_DOWN
else if (event.getActionMasked() == 5) {
print("Secondary pointer detected: ACTION_POINTER_DOWN");
print("Action index: " +str(event.getActionIndex()));
}
// ACTION_POINTER_UP
else if (event.getActionMasked() == 6) {
print("ACTION_POINTER_UP");
print("Action index: " +str(event.getActionIndex()));
}
//
else if (event.getActionMasked() == 4) {
}
// If you want the variables for motionX/motionY, mouseX/mouseY etc.
// to work properly, you'll need to call super.surfaceTouchEvent().
return super.surfaceTouchEvent(event);
}
这篇关于能加工处理的多点触控?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文